Reports earlier this week suggested Old Trafford bigwigs are willing to spend around £48m (€55m) on the 27-year-old.

Ghoulam, who is an Algeria international, is represented by Mourinho’s agent - Jorge Mendes.

He’s played 153 games for Napoli since signing from Saint-Etienne in 2014.

Man Utd are eyeing Napoli star Faouzi Ghoulam (Image: GETTY)

If United snare his signature, it could mean the end of the road for Luke Shaw at United.

The England international has repeatedly been linked with a departure from the Premier League giants and Mourinho hasn’t shied away from criticising his performances.

United legend Gary Neville reckons his old side will spend big this summer, with Mourinho ready to bring in up to four players.

"The question at Manchester United is which players do you keep and which don't you keep. Who are the ones that Jose Mourinho thinks don't have the mentality and who are the ones he feels do have it?" Neville said.

"I am confused by that, and Jose Mourinho probably is at times too, because the performance levels are up and down so much.

Man Utd boss Jose Mourinho is eyeing Faouzi Ghoulam (Image: GETTY)

"It's not just game to game but half to half. Look at the games against Manchester City and Crystal Palace, you see them at such a low and then such a high.

"He has mentioned mentality a lot in the last few weeks and I am convinced it's because of those peaks and troughs coming so unexpectedly. You think how have they gone that low, and then here's something else.

"He will want to make sure that is gone. That usually goes by having characters in the dressing room not letting the standards drop and making sure he has two, three, four players added to the squad.

“People who know how to win and don't drop their standards week in, week out.